The GATE Grind

GATE 2024 MT – Question 26

Manufacturing Processes · Metal forming · 1 mark · Multiple choice

Match the defects in Column I with manufacturing processes in Column II.

Column I:

P. Misrun

Q. Earing

R. Alligatoring

S. Chevron cracking

Column II:

1. Extrusion

2. Rolling

3. Casting

4. Deep drawing

  1. P – 3, Q – 1, R – 2, S – 4
  2. P – 3, Q – 4, R – 2, S – 1
  3. P – 2, Q – 4, R – 3, S – 1
  4. P – 1, Q – 3, R – 2, S – 4

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Correct answer: (B) P – 3, Q – 4, R – 2, S – 1

Explanation

Misrun is a casting fill defect (P3).

Earing reflects planar anisotropy in deep drawing (Q4).

Alligatoring is slab splitting during rolling (R2).

Chevron cracking is internal centre-burst cracking in extrusion (S1).

Hence **B**.